Ricoh rt36 Service Manual

LCT

(Machine Code: A683)

30 March, 1999 SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

Paper Size: Paper Weight: 60 g/m2 ~ 105 g/m2, 16 lb ~ 28 lb Tray Capacity: 1500 sheets (80 g/m2, 20lb) Remaining Paper Detection: 5 steps (100%, 75%, 50%, 25%, Near end) Power Source: 24 Vdc, 5 Vdc (from copier) Power Consumption: 40 W Weight: 17 kg Size (W x D x H): 390 mm x 500 mm x 390 mm

A4 sideways/LT sideways

A683-1

Peripherals

MECHANICAL COMPONENT LAYOUT 30 March, 1999

1.2 MECHANICAL COMPONENT LAYOUT

3 4 51

1. Relay Roller

2. Relay Sensor

3. Paper Feed Roller

4. Pick-up Roller

A683V500.WMF

5. Paper End Sensor

6. Paper Tray

7. Separation Roller

A683-2

30 March, 1999 ELECTRICAL COMPONENT LAYOUT

1.3 ELECTRICAL COMPONENT LAYOUT

1. Relay Clutch

2. Paper Feed Clutch

3. LCT Motor

4. Paper Height 1 Sensor

5. Paper Height 2 Sensor

6. Paper Height 3 Sensor

7. Main Board

8. Side Fence Position Sensor

9. Lower Limit Sensor

A683V501.WMF

10. LCT Set Sensor

11. Tray Cover Switch

12. Lift Motor

13. Down Switch

14. Relay Sensor

15. Paper End Sensor

16. Lift Sensor

17. Pick-up Solenoid

Peripherals

A683-3

ELECTRICAL COMPONENT DESCRIPTION 30 March, 1999

1.4 ELECTRICAL COMPONENT DESCRIPTION

Symbol Name Function Index No.

Motors

M1 LCT Drives all rollers. 3 M2 Lift Drives the paper tray up or down. 12

Sensors

S1 S2 S3 S4

S5 Paper Height 1 Detects the paper height. 4 S6 Paper Height 2 Detects the paper height. 5 S7 Paper Height 3 Detects the paper height. 6

S8 S9

Paper End Informs the copier when the paper has run

out.

Relay Detects the copy paper coming to the relay

roller and checks for misfeeds.

Lift Lower Limit

LCT Set Detects whether the LCT is correctly set or Side Fence

Position

Detects when the paper is at the correct paper feed height.

Detects when the tray is completely lowered, to stop the LCT motor.

not. Detects when the side fence is set at the A4

size position.

15 14 16

Switches

SW1 SW2

Solenoids

SOL1

Magnetic Clutches

MC1 Paper Feed Drives the paper feed roller. 2 MC2 Relay Drives the relay roller. 1

PCBs

PCB1

Tray Cover Down Lowers the LCT bottom plate if pressed by

Pick-up

Main Controls the LCT and communicates with the

Stops the LCT lift motor when the tray cover is opened.

the user.

Controls up-down movement of the pick-up roller.

copier.

11 13

A683-4

+ 10 hidden pages